Improvement in ovens



' t @itiith @tous aizni @Hup AMB'EosE SPITZMIELEE, 0E BUFFALO, NEW-YORK, AssleNo-E To .TOEN s. PERRY, TRUSTEE AND` EXEeUToE, AND NATHAN E. PEEEY.

Letters Patent No; 79,607dateti July 7, 1868.

' -'IMPBOVBMENT IN (WENS- IN BASE-BURNING STOVES.

@he Schaal: nismo tu in these rtters @aient nur mating part ut its same.

T0 ALL WHOM IT MAY'CONGERN:

Be it known that I, AMBROSESPITYZMILLER, of Buialo, in -the county of Erie, and State of New York, have invented an Improved Elevated Oven Base-Burning Stove; and I do hereby declare that the following is afull, clear, and exact description thereof, 'reference being had tothe accompanying drawings, makipga'part of this specification, in which'- Figure 1 is e. front elevation 'of the improved stove. Figure 2 is a diametrical section through the stove, taken in the plane indicated by red linesx z," in figs. 1 and 3. o

Figure 3 is a viewof the top section of the stove, as it would appear with the cover removed. Figure 4 is o horizontal section taken at y y, in iig. 2, looking upward. so Similar letters of 'reference indicate corresponding parts in the several tgures.

This invention relat'est'o an improvement on base-burning coal-stoves, having roven-chambers applied at the upper ends of the coal-magazines, and openings through the bottoms of said chambers, for supplying the maga zines with coal.

The o bject of the invention is to so construct an oven-chamber over the coul-magazine of a base-hurner wherein there is a direct or indirect communication from the re-chamher through the Hoef, so that a portion of the bottom, as well as the side wall 'of-the oven, shall'be exposed to the action ofthe heated products of com*- bustionon their way to the escape-pipe, ,as will behereinnfter explained. I

The invention also consists in providing an elevated oven of a base-burning stove with openings through its side walls, one of which has'a damper appliedte it,.so that, when desired, a portion of V-the heated products of. combustion'can be conducted through the oven on their way-to the escape-pipe, as will be hereinafter explained. To enable others skilled in the art to undcrstandxny invention,'1.will describe its construction and operation. Inthe' al'cconlppnying drawings, A`represents the base-section of the stove, which serves, in conjunction with the section B, to enclose and form the ashepit. The section Bis supported upon and securedto the base, A, and avv provided with doors B', which allow access to the fire-pot G,n.nd its grate, b, and also to'the ash-pit. The ire-.

pct C is constructcd'so as to i'lare upward, and it is supported at its upper end by means ol' a flange resting upon snitable'pr'ojections, extending inward from the upper contracted end of the section B. 'lhe repot `(l is .provided with a grate, b, which rests upon c. cross-bar, and is allowed to oseillate freely. It may alsodie provided at pleasure with a lining, a. A ring, g, which is suitably perforated, is arranged upon the flange of I `vthc fire-pot, or npcnfthc ring upon which the latter rests, and is adapted to serve ns a register for regulating the supply of air to the combustion-chamber above said `pot, said air'entering the stove through registcr-- openings, 'made through doors B', leading into the space below the fire-pot, asshown in iig. 2.

lThe conical s e ltion, G, which is supported: upon the contracted upper end ofthe section B, is perforated inl a suitable manner, and provided with illuminating-windows, and one or more illuminating-doors, E', for exposing the light o f there. The door E allows access to the fire-pot for startinga ire, and for any other purpose. y

Within the contracted upper end of the illuminating-section, G, stir-rups or concave-chairs, d, are formed at equal distances apart, fo'r receiving lugs, c,-wl\icl\. are cast upon thc upper enlarged portion of the inverted conical base, F, serving usine-ans for sustaining this base in a central position' over there-pot, as shown in fig. 2u l This inverted conical buse, I", formsthe lower end of the cylindrical coal-magazine Hfsnd receives upon i it this cylinder H, thereby supporting the latter in proper position within a cylindrical casing, I, and leaving an ascending-flue space,f, between said cylinders, las shown.

l The casing I is secured to and supported upon the upper contracted end of the illuminating-section'G, and receives upon its`upper end the flaring ring J, which forms the top section of the stove, a'nd which is providedf with a. central hole through tseap-plate, closed when desired byu removable cover, K.

The upper end of the magazine H terminates at the base of thejvall P, and is covered by ipeaus of'a bori- Zontul plfite, which forms the bottom of an oven, S, tvhich oven-'is surroti n ild flaring wall, P, showninfig'sf2and-.. v I Y* l I, i 'l An opening, of sernicircular or other form, is made through the bottoni plate of the oven S, on oneside of thc centre thereof, which opening leads into the upper end of the coal-inavgazinc H, and is designed forallovring coalvvto be supplied/to this inagazine. y Y' i u y I Theisaid opening' is` provided withfa 'sliding valve, z', or a drop-rloor or valve, having a. rod, proieL from itpmid extending through the front or other'part o f the section J, shown in figs. and i It will be seen,b fj' reference to ligs. 2, 3, and 4, that thc opening through the b ottbru of the oven S is puede onouc side of' the centre thereof, and that the upper end of the coal-magaine contracted at j, so as to leave about one-half of the bottom of the oven exposedto the action of the heated currents rising through the uef or into the druui, as the case ina v be. y this lneansftheovven will be subjected to heat inipinging against its bottom, as roll as against its side wall P. I v l i Tbroughthc front part of the oven-wnll P, perforations are made, which can be entirely or partially closed by means of n'slicling damper, 7L, a'nd dinmetrically opposite this damper lIt, an opening, 7L', is made through thev oven wall I. When the damper t is open, a portion of the products of 'combustion will pass through the oven on their ivay'tvohthe escape-pipe T, lbut when this damper h is closed, all the products will 'pass around the space j', between the walls J P. if

In order tof cause the heated products of combustion lto rise in the spacef, division-plates, s, are applied Zeg around the esapc-pipe T,fand carried up as high as the base of the oven, 1 herc unite with horizontal dellectingplntes., t t,.shown in gs. 3 and 4. These division-plates cause the pro u s "to ascend through space finto spaceff, and thence descend into the chamber fron'lvwhenee they lpass .oili through pipe T.; or if the:

escape is closed, they will remain in the chamber.

I have shown und described my invention applied to a stove having a direct ascending ilue leading fron; the

{ire-chamber, but it is obvious that the invention is applicable to revertibie-lue base-burning stoves, oi@ to lstoves wherein the products of combustion descend below the ire-pots before escaping. *Y

Having, described myr invention, what I claim as new, and desire to secure by. L etterslPateutpisT 1. yIn l:ibase-burning stove, having an oven arranged over the coalm agazi ue,'prov .i i i Y tion of thelbottom of such oven to the actionof asceudingcurrents of'heat, substantie 2. oven, S, in combination with ascending luef,and a coal-magazine having its upper end contracted,

substantially as described.

having its upper end contracten,substantially asi described.' Y

3. u oven, S, in combination with the luef, when used :is a drum or dead-chamber, and a cOaLmagazine' 4. Providing 4the elevated oven S of a base-burning stove with openings through its side wall, oneof whihl,

openings has applied to it a damper, la', substantially as` described; A

i l l MBROS-E SPITZMILLER.

yWitnesses; HEINRICH KRAFT,

CHARLES HUETTER; 

